Word-formation is that branch of the science of language which studies the patterns on which a language forms new lexical units, i.e. words. [Marchand, Hans, 1969, “The categories and Types of Present-Day English Word-Formation”, 2nd. Rev. Ed. München, Beck, p. 2]. We divide the question of word-structure into two sub-parts, that of word-formation, the coining of new words, and that of word-analysis, the provision of structure to already existing words. [...] New words are coined by the application of general rules called Word-Formation Rules. [Aronoff, Mark, 1974, “Word-Structure”, M. I. T., Cambridge/Mass., Polycopy, p. 3]. Viewed in this way, word-formation is clearly related to the lexicon as the repository of the designations used by the speakers of a language to refer to extralinguistic reality. Furthermore, it is interpreted as a means of enlarging this repository and thus adapting it to the changing referential requirements of a speech community.
- Kastovsky (2004), a pag.198